Lubricating system for engines.



F. M. DAVIS.

LUBRICATING SYSTEM FOR ENGINES.

APPLICATION mm JULY 17, 1913.

1 ,1 1 3,204. Patented 00b. 13, 1914.

2 SHEETS-SHEET 1. 1

P. M. DAVIS.

LUBRIGATING SYSTEM FOR'ENGINES.

APPLICATION FILED JULY 17, 1913.

1, 1 1 3,204. Patented 001;. 13, 1914.

2 SHEETSSHEET 2.

W/ r/vzsaas i/xvrav 7'0)? 1 @y {f j f a/dlw ITTIRA/'ki UNITED STATES PATENT OFFICE. y

FRAIVK M. DAVIS, OF MILWAUKEE, WISCONSIN.

nonarcarm'e SYSTEM FOR ENGINES.

' Specification of Letters Patent.

- Patented Oct. 13,1914.

Application-filed m 17', 1913. Serial no. 779,444.-

this specification.

This'invention relates to improvements in lubricating systemsifor engines and more particularly to engines of the internal com bustion type.

It is one of the objects of the present 1nvention to provide a lubricatmg system which is adapted to oil the cranked shaft of the engine continuously while the engine is in operation.

A further object. of the invention is to provide a lubricating systemin which the same oil may be used over and over a ain.

A further object of the inventio is to provide alubricating system in'which the 'oilflowing from the bearing is screened and cleaned from foreign matter before it is again'fed to the bearings.

.A further object of the invention is to provide a lubricatingsti'uction which "is strong and durable and is well adapted for the purpose .described.

'With the aboveand other objects in view,

-the invention consists of the improved lubricating system and its parts and combinations as set forth in the claims, and vall equivalents thereof.

In 1 the accompanying drawings in which thesame reference characters indicate the same parts in all of the views: Figure l is a vertical sectional fragmentary view of an opposed horizhntal internal combustion enine provided with the improved lubricating system; Fig. 2i's a similar viewv in horizontal section; and Fi the lower portion oft e crank case and the oil pump.

Referring to the drawings the numeral-8 indicates the opposed cylind'e'rs, 9 the crank case, 10 the cranked shaft, 11 the cam; shaft,

12: the pistons and 13 the connecting rods between the pistonswand the cranked shaft. The connecting rods are of tubular form and their bores 1 L (only onebeingshown) extend to points adj aeen t; ;.to the piston pins 15 and the cranked shaftand are in communication therewith by-oil holes 16. Elongated inlet charging openingsl? for the connect:

. the pump.

system ofsimple con- 3 is a detail view of ing rods are provided in the upper portions of said rods which extend along a considerable distance.

7 The cam shaft 11 has a geared connection 18 with the cranked shaft and the gear of the. upper worm 21 of the worm-shaft is in mesh with a worm pinion 22 which is mounted on .a vertically extending-pump shaft 23 and the said pump shaft-extends out of the crank the lower part of the crank case and is connected to a gear pump 24.

The casing 25 of the gear pump extends to and is bolted to the lower portion of the outlet passageways-26 and, 27 respectively which are in communication with thecrank case chamber 29 and with opposite sides of The inlet tion with the bottom portion of thecrank chamber and is adapted to receive the surthe cam shaft is in mesh with a pinion 19 mounted on a worm shaft 20 journaled in portion of the crank case 9. The

case and downwardly to a point adjacent to crank case and is provided with inlet and passageway 26 is in communicaplus oil which flows .from'the bearings and is screened through the screen 30 which covers the bottom portion of the crank chamber 1,85

from a short distance to provide an oil sup.- ply chamber 31.

Discharge pipes 32 and 33 positioned within the crank chamberand connected to the passageway 27 extend upwardly to positions so that their spouted ends 34 will diroot the oil into the tubular connecting rods and on the other bearings of the crank shaft.

above said inlet opening and is spaced there- I The inlet passageway 26 is provided with a valve 35 for regulating the flow of oil to the pump and the feed to the bearings.

In use the rotatlon of thegear pump will draw up .the oil fromuthe crankcase and force it on th connecting rod are oscillated up and down, the oil within the said-rods will alternately flow to theopposite ends of the rods and lubricate the bearthe oil'holes of the rods.

ings therepf through The surplus oil flowing from or discharged from the bearings will drop to the bottom portion of thecrank case and pass through the again be drawn into the pum same course as before descrlbed while/the engine is in operation.

.From the foregoing seen that the lubricating system is ofvery screen and the screened oil will,

and take the description i will be bearings and into the tubular 100 s and as the connecting rods simple construction and is well adapted for the purpose described.

What I claim as my invention is:

1. A lubricating system, comprising 'an engine, having acylinder and a crank case, a substantially horizontal hollow connecting rod forming part of the engine and having an inlet opening in its upper portion, a pipe within the crank case extending from a point at the bottom portion thereof to a posltion to spray a stream of oil into the con necting rod through said opening, and apump for forcing oil through said pipe from the bottom portion of the crank case.

2. A lubricating system, comprising an engine having a cylinder and a crank case, a substantially horizontal tubular connecting rod forming part of the engine and having an inlet opening in its upper portion, a pipe within the crank case and extending a from a point near the bottom portion of the" way, the inlet passageway being'in commu-' nication with the bottom portion of the crank chamber, a pipe connected to the out let passageway and extending to a position to spray a stream of oil into the bore of the connecting rod and to theengine bearings, a cam shaft within the crank case and driven by the cranked shaft, a pump shaft extending from the pump into the crank case, and

- a driving connection between the camshaft and the pump shaft.

4. A lubricating system, comprising an engine having a cylinder and a crank case, a substantially horizontal tubular connecting rod forming part of the engine and having an inlet opening in its upper portion, a pump positloned adjacent to the crank case and having an inlet and an outlet passageway, the inlet passageway being in communication with the bottom portion of the crank chamber, a pipe connected'to the outlet passageway and extending to a position to spray a stream of oil'into the bore of the connecting, rod and to the bearings of the engine, a cam shaft within the crankcase and driven by the cranked shaft, apump shaft extending from the pump into the crank case, and a worm and gear connection between the cam shaft and the pump shaft.

5. A lubricating system, comprising an engine, a plurality of cylinders and a crank case, substantially horizontal tubular con necting rods forming part ofthe engine and having oil inlet openings in their upper portions, a pump positioned adjacent to the crank case and having an inlet and an outlet passageway, the inlet passageway being in communication with the lower portion of the crank chamber, pipes connected to the outlet passageway and extending to positions to spray streams of oil into the bores of the connecting rods and to the bearings of the engine, a cam shaft within the crank casing and driven by the cranked shaft, a pump shaft extending from the pump into the crank case, and a driving connection between the pump shaft and the cam shaft.

6. A lubricating system, comprising an engine, a plurality of cylinders and a crank case, substantially horizontal tubular connecting rods forming part of the engine and having oil inlet openings in their upper portions, a pump positioned adjacent to the crank case and having an inlet and an outlet passageway, the inlet passageway being in communication with the lower portion of the crank chamber, pipes connected to the outlet passageway and extending to positlons to spray streams of oil into the bores of the connecting rods and to the bearings of the engine, a screening means covering the bottom portion of the crank case and spaced therefrom to form a supply chamber for the screened oil, a cam shaft within the crank casing and driven by the cranked shaft, a pump shaft extending from the pump 1nto the crank case, and a driving connection between the pump shaft and the cam shaft.

7. A lubricating system, comprismg an engine, a plurality of cylinders and a crank case, substantially horizontal tubular connecting rods forming part of the engine and having oil inlet openings in their upper portions, a pump positioned ad acent to the crank case and having an inlet and an outletpassageway; the inlet passageway being in communication with the lower portion of the crank chamber, pipes connected to the outlet passageway and extending'to positions to spray streams of oil into the bores of the connecting rods and to the bearings of the engine, a cam shaft within the crank casing and driven by the cranked shaft, a pump shaft extending from the pump lnto the crank case, a worm and gear driving connection between the pump shaft and the cam shaftf In testimony whereof, I afiix my ture, in presence of two witnesses.-

FRANK M. DAVIS.

signa Witnesses :4

HENRY L. Lnnnnns,

'GEO. W. KLIEGEL. 

